<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <ul>
      <li>1</li>
      <li class="l1">2</li>
      <li>3</li>
      <li class="l1">4</li>
    </ul>
    <div id="box">hello box</div>
    <script>
      const lis = document.querySelectorAll("ul li");
      const lisCls = document.querySelectorAll("ul .l1");
      const divs = document.querySelectorAll("#box");
      console.log(lis);
      console.log(divs);
      console.log(lisCls);
    </script>
  </body>
</html>
